Refrigerating machine



Nov. 29, 1932.

A. P. ANDERSON REFRIGERATING MACHINE Filed Aug.. 30, 1930 2 Sheets-Sheet l Nov. 29, 1932. P, ANDERSON 1,889,341

REFRIGERATING MACHINE Filed Aug. 30, 1930 2 Sheets-Sheet 2 Patented Nov. 29, 1932 UNITED STATES PATENT OFFICE AUGUST P. ANDERSON, OF CHICAGO; ILLINOIS, ASSIGNOR T0 ANDERSON-REES REFRIGERATING MACHINE 00., OF CHICAGO, ILLINOIS, A COBPORATION'OF ILLINOIS REFBIIGERATING MACHINE Application filed August 30, 1930. Serial No. 478306. 1

The invention relates to refrigerating machines.

One object of the invention is to provide an improved construction in which the compressor case is provided with an integral flange by which-it may be supported from a wall of the water jacket aroundthe condenser. r V

Another object of the invention is to provide a construction in which the crank-case of the compressor is disposed outside of the water jacket for the condenser and is supported by a plate which forms a portion of the water jacket and is mounted. on a supporting base.

Another object of the invention is to provide a machine in which the crank-case is disposed outside of the water jacket around the condenser and is provided with a duct formed in anintegral portion of the crankcase of the compressor-case for the low-pressure refrigerant passing to the compressor so the lubricant in the crank-case will be cooled thereby. p

A still further object of the invention is to provide an improved construction in which a water-jacket is formed around the bearing of the compressor-shaft in an integral portion of the crank-case with a water inlet at the bottom thereof and an outlet in an integral portion of the compressor case leading to the water acket around the compressor.

Another object of the invention is to provide an improved refrigerating machine em bodying a construction which is eflicient in operation and canbe manufactured ata low cost.

Other objects of the invention will appear from the detailed description. I

i The invention consists in the several novel features hereinafter setforth and more par ticularly defined by claims at the conclusion hereof. v v

In the drawings: Fig. 1 is a longitudinal section of a machine embodying the invention. Fig. 2 is a transverse section. Fig. 3 is a perspective of the supporting plate between the flange on the compressor case and the water-j acket. Fig. 4 is a perspective of the compressor casing. i j

' The invention is exemplified in a machine Which is supported on a suitable frame comprising legs 10 and a table 11 which may be separately or integrally formed and fixedly secured together in any suitable manner. The machine comprises a compressorA; a condenser coil B around the compressorcylinders, and having one end connected to receive refrigerant from the high pressure side of the compressor; a water-jacket C around the compressor cylinders and the condenser coil; a high-pressure'pipe line D for the condensed refrigerant leading from the discharge end of the condenser coil; a receiver E, to which the line D delivers the refrigerant from the condenser coil; a pipe connection F leading from the receiver to an expansion coil (not shown) a pipe 9 for conducting the' spent refrigerant from the expansion coil back to the compressor; and an electric motor H mounted on the table 11 for driving the compressor. The operation and function of these parts will be obvious to those skilled in the art.

The compressor comprises cylinders-a and a crank case a which are integrally formed; a crank-shaft a connected by pitman a to valved pistons a a bearing a for the en closed end of the crank-shaft a and a bearing a? for the end of the crank-shaft which extends to the outside of the crank-case and has secured thereto a wheel a whereby the compressor may be operated from the motor H through belts h and a suitable pulley flXed to the shaft of the electric motor. 'A removable cylinder head a", is secured to the upper end of the compressor casing, contains the spring-closed outlet valves a and is suitably connected to deliver the high-pressure refrigerant from the compressor-cylinders to the condenser coil B.

An annular or circumferential flange a is integrally formed with and projects laterally from the upper portion of crank-case a? of the compressor. Table 11 is formed with an opening 11 around which the flange a is'disposed. A plate 0 which is preferably formed of a stamping and has an openingc around the crank-case a fits on the top of the table and extends over the flange a on the crank-case, and bolts 0 pass through plate 0 and into the flange to support removably the compressor from the table. A gasket 0 is interposed between the flange a and the inner margin of plate 0 to form a water-tight joint between said plate and said flange. This exemplifies a construction in which the compressor is supported from the base by means of an annular flange which is integral with and near its upper end of the crank-case, so the lower portion of the crank-case will be outside of the water jacket and accessible while the upper portion of the crank-case is within the water-jacket and cooled.

The water-jacket C is formed by a shell comprising an annular side wall 0 having an integral top wall 0 and an integral annular outwardly extending flange 0 the lower end of which overlies the outer margin of the plate 0. Bolts 12, extending through flange 0 plate 0, and table 11, secure the jacket and plate on the table, and packing 0 is interposed between flange 0 and the top face of plate 0 to form a water-tight joint between the plate and the shell of the jacket. This exemplifies a construction in which an integral flange on the crank-case and a plate form a closure for the lower end of the water jacket. This construction permits the jacket I and compressor to be easily assembled and dismantled. It also provides a construction by which the compressor will be evenly supported substantially around its entire periphery. The top of the water jacket is provided with a removable plate 0 to provide access to the condenser when desired. 7

One end of the crank-case is provided with a removable head a containing bearing a to permit the insertion and removal of the crank-shaft. The other end of the crankcase is provided with a suitable bearing-seal a. For convenience in manufacture and to provide access to the cranks and pitmen, a removable head 15 is provided at the lower end of the crank-case When supporting the crank-case by a flange adjacent its upper end with the flange forming a portion of the lower end of the water-j acket, the lower portion of the crank-case, which contains lubricant, is not directly cooled by the water circulating in the jacket C. Pipe 9 for the spent refrigerant from the expansion line is connected to a duct 16 formed in an integral portion of the crank-case on one side thereof. This duct-is formed in the integral walls of the crank-case and the cylinder walls and leads to the cylinders. The flow of spent refrigerant passes throughduct 16 in walls integral with the crank-case below the flange a and serves to cool the lubricant in the crank-case.

A water-jacket 20 is formed around the crank-case bearing a within and between integral inner and outer walls of the crank-case. A duct 21 leads upwardly from this jacket to the top of the flange a to deliver water for the condenser into the jacket C. A water supply pipe 22 is connected to the bottom of the water jacket 20 to deliver water from a suitable source of supply to saidjacket from which it will flow to the water-jacket 20 for the condenser. In passing through jacket 20 the water passes around bearing a and keeps it cool. A suitable water outlet 23 is connected to the top of the shell 0 Water from pipe 22 circulates around bearing a and then passes upwardly through duct 21 to the waterjacket where it circulates around the condenser B to cool the compressed refrigerant and is discharged through outlet 23. A pipe 26 is connected to the crank-case so that oil may be delivered into the casing. A plug 27 in head a permits the oil to be drained from the crank-case when desired.

Pipe D is coupled to the condenser by a coupling which is divided at plate 0 and comprises a fitting d which is welded in the plate 0 and a suitable member d which is clamped by bolts to said plate to form a connection between the condenser coil in the water jacket and the pipe D disposed outside thereof and beneath table 11.

The invention exemplifies a refrigerating machine in which the mounting of the compressor comprises an integral flange on the crank-case of the compressor is clamped to a plate forming a portion of the water jacket and by which the compressor will be evenly and securely supported around its periphery; in which the duct for low-pressure refrigerant leading to the compressor cylinders is formed in an integral portion of the crankcase to cool the lubricant in the crank-case; in which the water passing to the condenser jacket passes around the bearing of the crankshaft to cool it. The invention also exemplifies a machine which can be easily manufactured and at a low cost and which can be readily assembled as well as providing for access to the parts in event a repair shall be necessary.

The invention is not to be understood as restricted to the details set forth, since these may be modified within the scope of the appended claims, without departing from the spirit and scope of the invention.

Having thus described the invention, what I claim as new and desire to secure by Letters Patent, is: Y

1. In a refrigerating machine, the combination of a compressor having a casing provided with a continuous flange therearound, a cylinder above the 1 flange, and a crank-case below said flange, said flange, cylinder, and case being integral, a condenser coil around the compressor-cylinder, a water jacket with an open bottom, enclosing the condenser coil and cylinder and terminating at the flange, a supporting structure for the machine extending around the compressor crank-case, and compressor supporting means to which said flange is secured, forming a closed bottom for the water jacket and a water-tight closure between the crankcase and the supporting structure.

2. In a refrigerating machine, the combination of a compressor having a casing provided with a continuous flange, a cylinder above the flange, and a crank-case below said flange, said flange, cylinder, and crank-case being integral, a condenser coil around the compressor-cylinder, a water jacket with an open bottom, enclosing the condenser coil and cylinder and terminating at the flange, a supporting structure for the machine extending around the compressor crank-case, and a separate plate to which said flange is secured, arranged to support the compressor from the supporting structure, and to form a closed bottom for the water jacket and a water-tight closure between the crank-case and said structure.

3. In a refrigerating machine, the combination of a compressor having a casing provided with a continuous flange therearound, a cylinder above the flange, and a crank-case below said flange, said flange, cylinder, and crank-case being integral, a condenser coil around the compressor-cylinder, a water jacket with an open bottom, enclosing the condenser coil and cylinder and terminating at the flange, a supporting structure for the machine extending around the crank-case, and a separately formed, ring-shaped plate to which said flange is secured, arranged to overlap the supporting structure so as to support the compressor from said structure and form a closed bottom for the water jacket and a water-tight closure between the structure and the crank-case.

4. In a refrigerating machine, the combination of a compressor having a casing provided with a continuous flange therearound, a cylinder above the flange, and a crank-case below said flange, said flange, cylinder, and crank-case being integral, a condenser coil around the compressor-cylinder, a waterjacket with an open bottom, enclosing the condenser coil and cylinder and provided at its lower end with a flange terminating adjacent the flange, a supporting structure for the machine extending around the crank-case and underlying the j acket-flange, and a separately formed, ring-shaped plate to which the compressor-flange is secured, extending between and secured to the jacket-flange and the supporting structure and serving to support the compressor from the structure and to form a closed bottom for the water-j acket and a water-tight closure between said structure and the crank-case.

5. In a refrigerating machine, the combi nation of a compressor having a casing provided with a continuous flange, a cylinder above the flange, and a crank-case extending upper portion of the compressor, a waterjacket enclosing the coil and compressorcylinder and terminating at the flange, and an intake duct for refrigerant leading to the compressor-cylinder and extending through an integral portion of the crank-case so as to cool the oil in the crank-case.

6. In a refrigerating machine, the combination of a compressor having a casing provided with an integral continuous flange, a cylinder above the flange, and a crank-case below said flange, a condenser coil around the upper portion of the compressor, a waterjacket enclosing the condenser coil and compressor cylinder terminating at the flange, means to which the flange is secured for sup porting the compressor, the crank-case having an integral annular wall with a shaft bearing therein, and an annular water chamber formed in an integral portion of the crank-case around said wall and a duct leading to the water jacket around the upper portion of the compressor, and a water inlet connected to the lower portion of said water chamber.

7. In a refrigerating machine, the combination of a compressor having a casing with an integral continuous flange and a crankcase extending belowsaid flange, a condenser coil around the upper portion of the compressor, a water jacket enclosing the condenser andcasing above and terminating at the flange, means to which the flange is secured for supporting the compressor, the crank-case having an integral annular wall with a shaft bearing therein, and an annular water chamber formed in an integral portion of the crank-case around said wall and a duct leading to the top of said flange and opening into the water jacket, and an inlet connected to deliver Water into the lower portion of said chamber.

Signed at Chicago, Illinois, this 22d day of August, 1930.

AUGUST P. ANDERSON.

below the flange, a condenser coil around the a 

